src/server/daemon/httpparser.c

Tue, 19 Apr 2022 12:32:22 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Tue, 19 Apr 2022 12:32:22 +0200
branch
webdav
changeset 298
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parent 183
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child 351
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permissions
-rw-r--r--

fix error handling in pg_remove_res

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2013 Olaf Wintermann. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #include <stdio.h>
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30 #include <stdlib.h>
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31
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32 #include "httpparser.h"
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33 #include "../public/nsapi.h"
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34 //include "request.h"
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35
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36
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37 HttpParser* http_parser_new(HTTPRequest *request) {
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38 HttpParser *parser = calloc(1, sizeof(HttpParser));
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39 parser->request = request;
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40
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41 parser->state = 0;
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42 parser->start_line.ptr = (char*)request->netbuf->inbuf;
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43 parser->start_line.length = 0;
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44
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45 parser->offset = 0;
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46
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47 return parser;
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48 }
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49
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50 void http_parser_free(HttpParser *parser) {
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51 free(parser);
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52 }
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53
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54 int http_parser_process(HttpParser *parser) {
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55 switch(parser->state) {
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56 case 0: {
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57 int r = get_start_line(parser);
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58 switch(r) {
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59 case 0: break;
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60 default: return r;
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61 }
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62 parse_request_line(parser);
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63 parser->state++;
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64 }
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65 case 1: {
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66 return http_parser_parse_header(parser);
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67 }
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68 case 2: {
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69 return 0;
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70 }
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71 }
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72 return -1;
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73 }
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74
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75 int http_parser_validate(HttpParser *parser) {
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76 HTTPRequest *req = parser->request;
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77 if(
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78 !req->method.ptr || req->method.length == 0
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79 || !req->uri.ptr || req->uri.length == 0
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80 || !req->httpv.ptr || req->httpv.length == 0)
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81 {
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82 return 0;
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83 }
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84 return 1;
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85 }
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86
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87 int get_start_line(HttpParser *parser) {
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88 netbuf *buf = parser->request->netbuf;
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89 while(buf->pos < buf->cursize) {
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90 unsigned char c = buf->inbuf[buf->pos];
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91 if(c == '\n') {
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92 size_t lnlen = buf->pos - parser->offset + 1;
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93 if(lnlen <= 2) {
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94 if(lnlen == 1 || buf->inbuf[buf->pos-1] == '\r') {
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95 // skip empty line
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96 buf->pos++;
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97 parser->offset = buf->pos;
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98 return 1;
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99 }
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100 // insufficient chars for request, return error
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101 return 2;
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102 }
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103 if(buf->inbuf[buf->pos - 1] == '\r') {
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104 parser->start_line.length = lnlen - 1;
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105 } else {
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106 parser->start_line.length = lnlen;
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107 }
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108 parser->start_line.ptr = (char*)buf->inbuf + parser->offset;
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109 buf->pos++;
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110 return 0;
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111 }
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112 buf->pos++;
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113 }
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114 return 1;
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115 }
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116
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117 int http_parser_parse_header(HttpParser *parser) {
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118 netbuf *buf = parser->request->netbuf;
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119
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120 parser->offset = buf->pos; // line offset
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121 parser->name.ptr = NULL;
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122 parser->name.length = 0;
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123 parser->value.ptr = NULL;
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124 parser->value.length = 0;
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125 while(1) {
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126 if(buf->pos >= buf->cursize) {
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127 return 1;
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128 }
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129 char c = (char)buf->inbuf[buf->pos++];
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130
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131 if(c > 32) {
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132 parser->wl = 0;
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133 if(c == ':' && parser->value.ptr == NULL) {
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134 parser->name.ptr = (char*)buf->inbuf + parser->offset;
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135 parser->name.length = buf->pos - parser->offset - 1;
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136 } else if(parser->name.ptr != NULL && parser->value.ptr == NULL) {
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137 parser->value.ptr = (char*)buf->inbuf + buf->pos - 1;
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138 }
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139 } else if(c == '\n') {
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140 if(parser->wl) {
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141 // line contains only white space -> end of request
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142 parser->state++;
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143 return 0;
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144 } else {
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145 parser->offset = buf->pos;
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146 if(parser->name.length != 0) {
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147 if(parser->value.ptr) {
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148 parser->value.length = (buf->inbuf + buf->pos - 1)
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149 - (unsigned char*)parser->value.ptr;
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150 if(buf->inbuf[buf->pos-2] == '\r') {
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151 parser->value.length--;
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152 }
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153 } else {
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154 parser->value.ptr = "";
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155 }
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156 // add header
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157 header_add(
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158 parser->request->headers,
101
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159 parser->name,
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160 parser->value);
1
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161 } else {
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162 // error: no value
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163 return 2;
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164 }
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165 parser->name.ptr = NULL;
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166 parser->value.ptr = NULL;
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167 parser->name.length = 0;
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168 parser->value.length = 0;
1
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169 parser->wl = 1;
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170 }
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171 }
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172 }
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173 }
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174
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175 int parse_request_line(HttpParser *parser) {
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176 sstr_t line = parser->start_line;
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177 parser->request->request_line = line;
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178
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179 /*
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180 * parse method, url and http version
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181 */
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182
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183 int i = 0;
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184 int ns = 0;
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185
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186 parser->request->method.ptr = line.ptr;
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187 for(;i<line.length;i++) {
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188 if(!ns && line.ptr[i] == ' ') {
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189 ns = 1;
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190 //line.ptr[i] = 0; // TODO: remove
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191 parser->request->method.length = i;
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parents:
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192 } else if(ns) {
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parents:
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193 if(line.ptr[i] != ' ') {
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194 break;
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195 }
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196 }
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197 }
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198
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199 parser->request->uri.ptr = line.ptr + i;
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200 ns = 0;
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201 int s = i;
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parents:
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202 for(;i<line.length;i++) {
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203 if(!ns && line.ptr[i] < 33) {
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204 ns = 1;
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205 //line.ptr[i] = 0; // TODO: remove
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206 parser->request->uri.length = i - s;
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parents:
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207 } else if(ns) {
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parents:
diff changeset
208 if(line.ptr[i] > 32) {
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209 break;
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parents:
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210 }
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parents:
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211 }
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parents:
diff changeset
212 }
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parents:
diff changeset
213
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parents:
diff changeset
214 parser->request->httpv.ptr = line.ptr + i;
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215 ns = 0;
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parents:
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216 s = i;
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parents:
diff changeset
217 for(;i<line.length;i++) {
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parents:
diff changeset
218 if(!ns && line.ptr[i] < 33) {
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219 ns = 1;
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parents:
diff changeset
220 //line.ptr[i] = 0; // TODO: remove
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parents:
diff changeset
221 parser->request->httpv.length = i - s;
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parents:
diff changeset
222 } else if(ns) {
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parents:
diff changeset
223 if(line.ptr[i] > 32) {
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parents:
diff changeset
224 break;
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parents:
diff changeset
225 }
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parents:
diff changeset
226 }
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parents:
diff changeset
227 }
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parents:
diff changeset
228
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229 return 0;
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parents:
diff changeset
230 }

mercurial